MEDIUM
7th CBSE
IMPORTANT
Earn 100

Crystals can be made from unsaturated solutions.

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Important Questions on Physical and Chemical Changes

EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 3
Conversion of chalk powder to chalk stick is a chemical change.
MEDIUM
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 4
Pouring hot milk on cornflakes is a chemical change.
MEDIUM
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 5
Chemical changes are always reversible.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 6
On mixing baking soda with vinegar, carbon dioxide is produced.
MEDIUM
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 1

Classify the following as physical or chemical change:

Cooking of food

MEDIUM
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 2

State the following is a physical or chemical change.

Glowing of the electric bulb.

EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 3

Identify the following changes as Physical or Chemical.

Ripening of fruits

MEDIUM
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 6 - Physical and Chemical Changes>LET'S Learn And EVALUATE>Q 4

Classify the following as physical or chemical change:

Respiration in living bieng